The Updated by data type is for displaying a non-editable user value showing who the row was most recently updated by. Essentially, who changed a cell in the row most recently. The Updated by data type is one of a few column-only data types that Spreadsheet.com offers. Column-only data types restricting all data in a column and automatically add the corresponding data.
The Updated by data type has few settings, as the data in cells cannot be changed. However, like other text data types, you can adjust the formatting of cells in an Updated by column using the formatting toolbar.
Updated by is one of Spreadsheet.com's automatic column-level data types. Make sure to check out the Updated at data type, as well as the Created by and Created at data types. All of our column-level data types are listed in our introduction to data types article.